EP0224452A1 - Ignition system for an internal combustion engine - Google Patents

Ignition system for an internal combustion engine Download PDF

Info

Publication number
EP0224452A1
EP0224452A1 EP86830334A EP86830334A EP0224452A1 EP 0224452 A1 EP0224452 A1 EP 0224452A1 EP 86830334 A EP86830334 A EP 86830334A EP 86830334 A EP86830334 A EP 86830334A EP 0224452 A1 EP0224452 A1 EP 0224452A1
Authority
EP
European Patent Office
Prior art keywords
winding
voltage
plug
coil
coils
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86830334A
Other languages
German (de)
French (fr)
Other versions
EP0224452B1 (en
Inventor
Giancarlo Fasola
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Europe SpA
Original Assignee
Magneti Marelli SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11306736&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0224452(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Magneti Marelli SpA filed Critical Magneti Marelli SpA
Priority to AT86830334T priority Critical patent/ATE53100T1/en
Publication of EP0224452A1 publication Critical patent/EP0224452A1/en
Application granted granted Critical
Publication of EP0224452B1 publication Critical patent/EP0224452B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/02—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors
    • F02P7/03—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors with electrical means
    • F02P7/035—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors with electrical means without mechanical switching means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • H01F2038/122—Ignition, e.g. for IC engines with rod-shaped core

Definitions

  • the present invention relates to ignition systems for internal combustion engines and particularly to static distribution ignition systems.
  • the invention provides an ignition system of the type comprising
  • the inductive-voltage increase means are usually constituted by a single coil comprising a core of ferromagnetic material and two windings, a primary winding and a secondary winding respectively, superposed around this core.
  • the invention proposes an ignition system as specified above which is characterised in that the voltage-increase means comprise
  • each of the coils is connected directly to the corresponding plug without the interposition of any connecting cable.
  • the raising of the voltage for initiating sparking in a particular plug is achieved by means of a transformer whose primary winding is formed by the common winding and by the first winding of the coil associated with the plug.
  • the secondary winding of this transformer is the second winding of this coil.
  • This solution enables the bulk and the heat dissipation in the plugs to be reduced and also enables the coils to be mounted directly on the plugs.
  • an ignition system includes a battery 1 acting as an energy source and connectible to an electronic control module 2 through a switch 3 for example of the key operable type.
  • the electronic control module 2 is connected to a sensor 4, for example of the phonic wheel type comprising a magnetic detector (pick-up) associated with a member rotatable by the rotation of the cam shaft and provided with detectable references.
  • a sensor 4 for example of the phonic wheel type comprising a magnetic detector (pick-up) associated with a member rotatable by the rotation of the cam shaft and provided with detectable references.
  • the control module 2 may also be connected to further sensors such as, for example, a sensor for sensing the temperature of the engine and a sensor for sensing the vacuum in the induction manifold of the engine.
  • the electronic control module 2 is connected through a capacitor 5 to a winding CW wound on a core 6 formed from sheets of ferromagnetic material. To one end of the winding CW are connected the anodes of n thyristors Tl-Tn (n beino the number of cylinders of the engine). The gate electrodes of these thyristors are connected to the electronic control module 2.
  • References Cl-Cn indicate n coils each comprising a primary winding and a secondary winding indicated W1 and W2. These windings, as will be more fully described below, are wound on a core N of ferromagnetic sheets.
  • the windings W2 are connected to the plugs SPl-SPn.
  • the windings W1 are connected at one end to the cathodes of the associated thyristors Tl-Tn and at their other ends are connected together and to the electronic control module 2.
  • the electronic control module 2 causes the triggering of the thyristors Tl to Tn in a predetermined sequence in dependence on the signals supplied to it by the sensor 4 and any other sensors mentioned above.
  • the winding Wl of the coil Cl is connected in series with the winding CW: these together constitute the primary winding of a transformer, the secondary winding of which is represented by the winding W2 of the coil Cl.
  • the module 2 causes a pulse of current to flow through CW,T1 and W1 and the consequent sparking of SP1.
  • the common winding CW is put electrically in series with the winding W1 of the coil CN to cause the plug SPn to spark.
  • the common winding CW is connected in series with the winding W1 of the corresponding coil.
  • the common winding CW generally has a mutual inductance M of zero with the winding W2, while the winding Wl has a coefficient of mutual inductance M with the winding W2 of at most 1.
  • the windings W1 and W2 of the coils C are made so that they have a mutual inductance close to or equal to 1 it is possible to make the mutual inductance between the winding W2 of each coil and the series formed by CW and W1 to be equal to or close to the optimum.
  • Figure 2 illustrates one embodiment of a typical coil C.
  • the coil C includes a rod shaped core N formed from sheets of ferromagnetic material, surrounded by a tubular sheath 7 of electrically-insulating material, for example nylon.
  • a tubular sheath 7 of electrically-insulating material, for example nylon.
  • the winding W2 Around the sheath 7 is the winding W2 and around this is a layer 8 of electrically-insulating material such as paper on which the winding W1 is wound.
  • the unit thus formed is encapsulated in a synthetic resin casing 9 having, for example, an outer diameter of about 3cm and a length of about 6cm.
  • a metal disc d is incoporated in the resin layer and covers one end face of the coil and is connected to the winding W2. As will be seen below, the disc 10 is intended to enable the winding W2 to be connected to the central electrode of a plug.
  • FIG 2 three contact members a, b, c are shown in the form of flat pins partly embedded in the layer of resin which covers the other end face of the coil and connected in order to the ends of the winding W1 and to the other end of the winding W2.
  • FIG. 3 shows an example of the mounting of coil C directly on a respective plug SP, without the interposition of any connecting cable.
  • a tubular sheath 10 is used the lower part, of which is fitted onto the plug SP and is snap engaged with a projection of the plug body by means of sprung teeth 10a.
  • the coil C is housed in the upper part within the sheath 10 and a helical spring S of electrically-conductive material is interposed between the end disc d and the central electrode E.
  • a connector M supported at one end by a low-power connecting cable P is coupled to the terminals a,b,c.
  • the ignition system of the invention enables the bulk of the coils to be reduced and, as has been described, enables these to be mounted directly on the plugs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

The system comprises a low-voltage electrical supply (1), inductive voltage-increase means (CW, C), a plurality of plugs (SP), and distribution means (2, T) for allowing the selective supply of high voltage to the plugs (SP) through the voltage-increase means (CW, C). These latter comprise a low-voltage winding (CW) through which current flows each time a spark is produced in at least one plug (SP), and a plurality of coils (C1 - Cn) each of which is associated with a respective plug (SP1 - SPn). Each coil includes first and second windings (W1; W2) magnetically coupled together, the second winding (W2) being connected electrically to the plug (SP). The distribution means (2; T1 - Tn) are also adapted to connect the first winding (W1) of one or more of the coils (C1 - Cn) selectively to the low voltage winding (CW) and to allow current to flow through the said windings (CW, W1) to create the spark in the plugs (SP) connected to the said coils (C).

Description

  • The present invention relates to ignition systems for internal combustion engines and particularly to static distribution ignition systems.
  • The invention provides an ignition system of the type comprising
    • a low-voltage electrical supply, inductive voltage increase means,
    • a plurality of ignition plugs, and distribution means for allowing the selective supply of high voltage to the plugs through the voltage-increase means.
  • In ignition systems with rotary distributors the inductive-voltage increase means are usually constituted by a single coil comprising a core of ferromagnetic material and two windings, a primary winding and a secondary winding respectively, superposed around this core.
  • In other ignition systems, and particularly in static-distribution ones, it is necessary to provide an ignition coil for each plug or cylinder of the engine. Given the dimensions of each individual coil, this solution has the problem of considerable bulk.
  • In order to reduce the bulk, the invention proposes an ignition system as specified above which is characterised in that
    the voltage-increase means comprise
    • a common low voltage winding through which current flows each time a spark is produced in at least one plug and
    • a plurality of coils each of which is associated with a respective plug and includes first and second windings magnetically coupled together, the second winding being connected electrically to the plug,
    • the distribution means being adapted' to connect the first winding of one or more of the coils selectively to the common winding and to allow current to flow through these windings to create the spark in the plugs (SP) connected to the said one or more coils.
  • According to a further characteristic, each of the coils is connected directly to the corresponding plug without the interposition of any connecting cable.
  • In the ignition system of the invention, the raising of the voltage for initiating sparking in a particular plug is achieved by means of a transformer whose primary winding is formed by the common winding and by the first winding of the coil associated with the plug. The secondary winding of this transformer is the second winding of this coil.
  • This solution enables the bulk and the heat dissipation in the plugs to be reduced and also enables the coils to be mounted directly on the plugs.
  • Further characteristics and advantages of the system according to the invention will be apparent from the detailed description which follows with reference to the appended drawings, provided purely by way of non-limiting example, in which:
    • Figure 1 is an electrical diagram, partially in block form, illustrating one embodiment of an ignition system according to the invention,
    • Figure 2 is a partially-sectioned view of a coil used in the ignition system of the invention, and
    • Figure 3 shows the mounting of a coil directly on a plug by way of example.
  • With reference to Figure 1, an ignition system according to the invention includes a battery 1 acting as an energy source and connectible to an electronic control module 2 through a switch 3 for example of the key operable type.
  • The electronic control module 2 is connected to a sensor 4, for example of the phonic wheel type comprising a magnetic detector (pick-up) associated with a member rotatable by the rotation of the cam shaft and provided with detectable references.
  • The control module 2 may also be connected to further sensors such as, for example, a sensor for sensing the temperature of the engine and a sensor for sensing the vacuum in the induction manifold of the engine.
  • The electronic control module 2 is connected through a capacitor 5 to a winding CW wound on a core 6 formed from sheets of ferromagnetic material. To one end of the winding CW are connected the anodes of n thyristors Tl-Tn (n beino the number of cylinders of the engine). The gate electrodes of these thyristors are connected to the electronic control module 2.
  • References Cl-Cn indicate n coils each comprising a primary winding and a secondary winding indicated W1 and W2. These windings, as will be more fully described below, are wound on a core N of ferromagnetic sheets.
  • The windings W2 are connected to the plugs SPl-SPn.
  • The windings W1 are connected at one end to the cathodes of the associated thyristors Tl-Tn and at their other ends are connected together and to the electronic control module 2.
  • In operation, when the switch 3 is closed and the engine started, the electronic control module 2 causes the triggering of the thyristors Tl to Tn in a predetermined sequence in dependence on the signals supplied to it by the sensor 4 and any other sensors mentioned above. When the thyristor Tl for example is triggered the winding Wl of the coil Cl is connected in series with the winding CW: these together constitute the primary winding of a transformer, the secondary winding of which is represented by the winding W2 of the coil Cl. The module 2 causes a pulse of current to flow through CW,T1 and W1 and the consequent sparking of SP1.
  • Similarly, when the thyristor Tn is triggered, the common winding CW is put electrically in series with the winding W1 of the coil CN to cause the plug SPn to spark.
  • As stated, each time a thyristor is triggered, the common winding CW is connected in series with the winding W1 of the corresponding coil. The common winding CW generally has a mutual inductance M of zero with the winding W2, while the winding Wl has a coefficient of mutual inductance M with the winding W2 of at most 1.
  • It is known that there is an optimum value of the mutual inductance between two windings: this optimum value is not M=l, but is close to 0.8.
  • If then' the windings W1 and W2 of the coils C are made so that they have a mutual inductance close to or equal to 1 it is possible to make the mutual inductance between the winding W2 of each coil and the series formed by CW and W1 to be equal to or close to the optimum.
  • Figure 2 illustrates one embodiment of a typical coil C. In this embodiment the coil C includes a rod shaped core N formed from sheets of ferromagnetic material, surrounded by a tubular sheath 7 of electrically-insulating material, for example nylon. Around the sheath 7 is the winding W2 and around this is a layer 8 of electrically-insulating material such as paper on which the winding W1 is wound. The unit thus formed is encapsulated in a synthetic resin casing 9 having, for example, an outer diameter of about 3cm and a length of about 6cm.
  • A metal disc d is incoporated in the resin layer and covers one end face of the coil and is connected to the winding W2. As will be seen below, the disc 10 is intended to enable the winding W2 to be connected to the central electrode of a plug.
  • In Figure 2 three contact members a, b, c are shown in the form of flat pins partly embedded in the layer of resin which covers the other end face of the coil and connected in order to the ends of the winding W1 and to the other end of the winding W2.
  • Figure 3 shows an example of the mounting of coil C directly on a respective plug SP, without the interposition of any connecting cable. In this mounting, a tubular sheath 10 is used the lower part, of which is fitted onto the plug SP and is snap engaged with a projection of the plug body by means of sprung teeth 10a. The coil C is housed in the upper part within the sheath 10 and a helical spring S of electrically-conductive material is interposed between the end disc d and the central electrode E.
  • A connector M supported at one end by a low-power connecting cable P is coupled to the terminals a,b,c.
  • The ignition system of the invention enables the bulk of the coils to be reduced and, as has been described, enables these to be mounted directly on the plugs.

Claims (7)

1. Ignition system for an internal combustion engine, particularly a static-distribution ignition system, comprising
a low-voltage electrical supply (1), inductive voltage-increase means (CW,C)
a plurality of ignition plugs (SP), and distribution means (2; T) for allowing the selective supply of high voltage to the plugs (SP) through the voltage-increase means,

characterised in that
the voltage-increase means comprise
a common low-voltage winding (CW) through which current flows each time a spark is produced in at least one plug (SP) and
a plurality of coils (C1-Cn) each of which is associated with a respective plug (SP1-SPn) and includes first and second windings (W1,W2) magnetically coupled together, the second winding (W2) being connected electrically to the plug (SP),
the distribution means (2; T1 -Tn) being adapted to connect the first winding (Wl) of one or more of the coils (Cl-Cn) selectively to the common winding (CW) and to allow current to flow through these windings (CW,W1) to create the spark in the plugs (SP) connected to one or more coils (C).
2. System according to Claim 1, characterised in that each coil (C1-Cn) is connected directly to the corresponding plug (SPl-SPn) without the interposition of any connecting cable.
3. System according to Claim 1 or claim 2, characterised in that the distribution means comprise controlled switch devices (Tl-Tn) of static type.
4. System according to Claim 2 or Claim 3, characterised in that each coil (C) comprises
a rod-shaped core (N) formed from sheet steel and surrounded by a layer (7) of electrically-insulating material around which is disposed the second winding (W2),
a second layer (8) of electrically-insulating material disposed around the second winding (W2) and on which the first winding (W1) is wound, and
a layer of insulating material (9) surrounding the outside of the first winding (W1).
5. System according to Claim 3, characterised in that each coil (C) has a conductive plate (d) at one end which is electrically connected to the second winding (W2) and is intended for connection to the central electrode of a plug (SP).
6. System according to Claim 4 or Claim 5, characterised in that each coil (C) carries at its other end first and second electrical connecting members (ab) preferably in the form of flat pins, connected to the two ends of the first winding (Wl).
7. System according to Claim 6, characterised in that each coil (C) carries a third electrical connecting member (c) at its other end, preferably in the form of a flat pin, and connected to the second winding (W2).
EP86830334A 1985-11-13 1986-11-10 Ignition system for an internal combustion engine Expired EP0224452B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86830334T ATE53100T1 (en) 1985-11-13 1986-11-10 IGNITION SYSTEM FOR INTERNAL ENGINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6796085 1985-11-13
IT67960/85A IT1182680B (en) 1985-11-13 1985-11-13 IGNITION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
EP0224452A1 true EP0224452A1 (en) 1987-06-03
EP0224452B1 EP0224452B1 (en) 1990-05-23

Family

ID=11306736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86830334A Expired EP0224452B1 (en) 1985-11-13 1986-11-10 Ignition system for an internal combustion engine

Country Status (7)

Country Link
US (1) US4825844A (en)
EP (1) EP0224452B1 (en)
JP (1) JPS62118061A (en)
AT (1) ATE53100T1 (en)
DE (1) DE3671502D1 (en)
ES (1) ES2014997B3 (en)
IT (1) IT1182680B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990002261A1 (en) * 1988-08-29 1990-03-08 Robert Bosch Gmbh Ignition circuit with interference suppression
FR2641579A1 (en) * 1989-01-09 1990-07-13 Siemens Bendix Automotive Elec Individual transformer for powering a spark plug for igniting an air-fuel mixture in an internal combustion engine, and ignition device equipped with such a transformer
EP0383730A1 (en) * 1989-02-13 1990-08-22 FIAT AUTO S.p.A. A static ignition device for internal combustion engines
WO1994013950A1 (en) * 1992-12-09 1994-06-23 Sydney Gilbert Hodgins Internal combustion engine with low voltage distribution
EP0638971A1 (en) * 1993-08-10 1995-02-15 Cooper Industries, Inc. Ignition coil with reduced transverse size

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903674A (en) * 1989-03-13 1990-02-27 General Motors Corporation Spark developing apparatus for internal combustion engines
JP2936119B2 (en) * 1990-03-29 1999-08-23 アイシン精機株式会社 Ignition device for internal combustion engine
US5111790A (en) * 1990-09-28 1992-05-12 Prestolite Wire Corporation Direct fire ignition system having individual knock detection sensor
JPH0729746A (en) * 1993-07-09 1995-01-31 Mitsubishi Electric Corp Ignition coil device for internal combustion engine
CA2128036C (en) * 1993-07-15 2003-11-04 Howard Vincent Bonavia Ignition system using multiple gated switches with variable discharge energy levels and rates
FR2726864B1 (en) * 1994-11-15 1996-12-27 Sagem Allumage IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE
JP4019766B2 (en) * 2002-04-01 2007-12-12 株式会社デンソー Ignition device for internal combustion engine and method of assembling the same
US7066161B2 (en) * 2003-07-23 2006-06-27 Advanced Engine Management, Inc. Capacitive discharge ignition system
US7215528B2 (en) * 2003-09-08 2007-05-08 Ford Motor Company Turn-on coil driver for eliminating secondary diode in coil-per-plug ignition coils
DE102010045174B4 (en) * 2010-09-04 2012-06-21 Borgwarner Beru Systems Gmbh Circuit arrangement for an HF ignition of internal combustion engines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1122367A (en) * 1966-07-15 1968-08-07 Wipac Dev Ltd Sparking plug cover
US3566202A (en) * 1968-06-03 1971-02-23 Chrysler Corp Self-resonant ignition coil and system
FR2111518A5 (en) * 1970-10-20 1972-06-02 Plessey Handel Investment Ag
US3982518A (en) * 1971-10-14 1976-09-28 Fournitures Internationales De Materieles Electroniques Electronic ignition device for internal combustion engines
US4277724A (en) * 1979-10-18 1981-07-07 The Economy Engine Company Integral spark plug coil for automotive-type plug
EP0069889A2 (en) * 1981-07-03 1983-01-19 Nissan Motor Co., Ltd. Ignition system for an internal combustion engine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US964007A (en) * 1907-05-22 1910-07-12 Arthur A Maxwell Ignition apparatus.
US1011884A (en) * 1911-08-03 1911-12-12 Lindsley And Allen Electric Company Ignition device.
US3621826A (en) * 1970-01-15 1971-11-23 Gene L Chrestensen Pulse counter ignition system
DE2324306A1 (en) * 1973-05-14 1974-12-05 Bosch Gmbh Robert IGNITION DEVICE FOR COMBUSTION MACHINERY
US3934570A (en) * 1974-04-24 1976-01-27 Ford Motor Company Ferroresonant capacitor discharge ignition system
JPS56151275A (en) * 1980-04-24 1981-11-24 Nissan Motor Co Ltd Plasma ignition device of internal combustion engine
JPS59226279A (en) * 1983-06-04 1984-12-19 Honda Motor Co Ltd Ignition device
JPS59226274A (en) * 1983-06-07 1984-12-19 Nippon Denso Co Ltd Ignition device for internal-combustion engine
SE436672B (en) * 1983-08-05 1985-01-14 Saab Scania Ab THE IGNITION CARTRIDGE INCLUDED IN THE ENGINE'S IGNITION SYSTEM
US4733646A (en) * 1986-04-30 1988-03-29 Aisin Seiki Kabushiki Kaisha Automotive ignition systems

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1122367A (en) * 1966-07-15 1968-08-07 Wipac Dev Ltd Sparking plug cover
US3566202A (en) * 1968-06-03 1971-02-23 Chrysler Corp Self-resonant ignition coil and system
FR2111518A5 (en) * 1970-10-20 1972-06-02 Plessey Handel Investment Ag
US3982518A (en) * 1971-10-14 1976-09-28 Fournitures Internationales De Materieles Electroniques Electronic ignition device for internal combustion engines
US4277724A (en) * 1979-10-18 1981-07-07 The Economy Engine Company Integral spark plug coil for automotive-type plug
EP0069889A2 (en) * 1981-07-03 1983-01-19 Nissan Motor Co., Ltd. Ignition system for an internal combustion engine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990002261A1 (en) * 1988-08-29 1990-03-08 Robert Bosch Gmbh Ignition circuit with interference suppression
FR2641579A1 (en) * 1989-01-09 1990-07-13 Siemens Bendix Automotive Elec Individual transformer for powering a spark plug for igniting an air-fuel mixture in an internal combustion engine, and ignition device equipped with such a transformer
EP0383730A1 (en) * 1989-02-13 1990-08-22 FIAT AUTO S.p.A. A static ignition device for internal combustion engines
US5009213A (en) * 1989-02-13 1991-04-23 Fiat Auto S.P.A. Static ignition device for internal combustion engines
WO1994013950A1 (en) * 1992-12-09 1994-06-23 Sydney Gilbert Hodgins Internal combustion engine with low voltage distribution
EP0638971A1 (en) * 1993-08-10 1995-02-15 Cooper Industries, Inc. Ignition coil with reduced transverse size

Also Published As

Publication number Publication date
JPS62118061A (en) 1987-05-29
EP0224452B1 (en) 1990-05-23
IT8567960A0 (en) 1985-11-13
ES2014997B3 (en) 1990-08-01
DE3671502D1 (en) 1990-06-28
ATE53100T1 (en) 1990-06-15
IT1182680B (en) 1987-10-05
US4825844A (en) 1989-05-02

Similar Documents

Publication Publication Date Title
US4825844A (en) Ignition system for an internal combustion engine
EP0387993B1 (en) Internal combustion engine ignition apparatus having a primary winding module
US4658799A (en) Ignition coil assembly for internal combustion engines
US4706639A (en) Integrated direct ignition module
EP0661449B1 (en) Device for detecting misfire of internal combustion engine equipped with double-ended coil and distributorless ignition system
US5844462A (en) Magnetic core-coil assembly for spark ignition systems
US4561707A (en) Current-sheet inductor network and pulse-forming systems
US20040231652A1 (en) Ignition coil for an internal combustion engine
JP4326598B2 (en) Magnetic core coil assembly for spark ignition
US5379745A (en) Ignition system for internal combustion engines with high-tension switches
EP0463842B1 (en) Distributorless ignition system
US3716813A (en) Ignition coils
US6292082B1 (en) Ignition device for an internal combustion engine
EP0665376B1 (en) Misfire detecting device
EP0201173B1 (en) Ignition system
JPS6370508A (en) Ignition coil for internal combustion engine
EP0171152B1 (en) Electromagnetic radiation suppressing distributor
US6222435B1 (en) Stick coil for igntion systems
JP2787430B2 (en) Ignition coil for internal combustion engine
JP2555101B2 (en) Ignition coil for internal combustion engine
WO1997041576A1 (en) Magnetic core-coil assembly for spark ignition systems
RU2285307C2 (en) Ignition coil for internal-combustion engine (alternatives)
US5506561A (en) Ignition coil
KR20000065128A (en) Magnetic Core-Coil Assemblies for Spark Ignition Systems
JPH10189367A (en) Ignition coil

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19870609

17Q First examination report despatched

Effective date: 19881215

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900523

Ref country code: NL

Effective date: 19900523

Ref country code: LI

Effective date: 19900523

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19900523

Ref country code: CH

Effective date: 19900523

Ref country code: BE

Effective date: 19900523

Ref country code: AT

Effective date: 19900523

REF Corresponds to:

Ref document number: 53100

Country of ref document: AT

Date of ref document: 19900615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3671502

Country of ref document: DE

Date of ref document: 19900628

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19901130

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: ROBERT BOSCH GMBH

Effective date: 19910121

ITTA It: last paid annual fee
PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19920404

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19971017

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971027

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19971113

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19971128

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19981111

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990730

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990901

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20010301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051110